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Table 3 Annual TP deposition (kg P km−2 a−1) over the years of 2013–2017 estimated (a) as the sum of direct measurements and median concentrations for missing values, (b) as the sum with 0.98 µmol P l−1 as median for all rain samples, (c) as the sum of direct measurements and the ratio of PO4-P:TP as monthly median for missing values and compared with PO4-P deposition

From: Magnitude and influence of atmospheric phosphorus deposition on the southern Baltic Sea coast over 23 years: implications for coastal waters

  2013 2014 2015 2016 2017
PO4-P deposition (kg km−2 a−1) 20.3 11.7 19.2 34.9 16.7
Mode of calculation
 (a) Sum of measured TP plus median (annual) TP concentrations 19.1 23.5 23.7 28.6 27.7
 (b) All rain samples with median (annual) TP concentrations 18.8 18.5 20.2 16.7 22.6
 (c) Sum of measured TP plus PO4-P:TP portion (monthly median) 27.0 38.9 69.9 75.7 47.9